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A
1
2
U10:D
74HC14
9
8
MEM_CE
U8:C
10
(0x2C0000)
_WR
74HC32
9
CS_FISPORT(574)
3
4
A
10-10
B
VDD50V
C38
100nF
VDD50V
D(0:7)
U12
2
20
1D
VCC
D(7)
3
2D
D(6)
4
19
3D
1Q
D(5)
VFIS_ONOFF
5
18
4D
2Q
D(4)
FISEPROM_PGM
6
17
5D
3Q
D(3)
FISEPROM_OE
7
16
6D
4Q
D(2)
FISEPROM_CE
8
15
7D
5Q
D(1)
DTR3
9
14
8D
6Q
D(0)
FISCAL_DATA_WR
13
7Q
FA(17)
12
8Q
FA(16)
1
OC
/MEM_CE
/MEM_CE
11
10
CLK
GND
8
B
D(0:7)
VDD50V
C32
100nF
VDD50V
14
U8:A
1
CS_FISADDL_WR
3
74HC32
2
(0x280000)
_WR
C22
7
100pF
U8:B
4
6
74HC32
5
CS_FISADDH_WR
(0x260000)
C34
100pF
VDD50V
R55
4.7K
FISCAL_DATA_WR
U8:D
13
(0x2A0000)
CS_FISDATA_WR
11
74HC32
12
C8
100pF
(0x2E0000)
CS_FISDATA_RD
C
VDD50V
C9
100nF
VDD50V
U3
2
20
1D
VCC
D(0)
3
2D
D(1)
4
19
3D
1Q
D(2)
FA(0)
5
18
4D
2Q
D(3)
FA(1)
6
17
5D
3Q
D(4)
FA(2)
7
16
6D
4Q
D(5)
FA(3)
8
15
7D
5Q
D(6)
FA(4)
9
14
8D
6Q
D(7)
FA(5)
13
7Q
FA(6)
12
8Q
FA(7)
1
OC
11
10
CLK
GND
VDD50V
C26
100nF
VDD50V
U6
2
20
1D
VCC
D(0)
3
2D
D(1)
4
19
3D
1Q
D(2)
FA(8)
5
18
4D
2Q
D(3)
FA(9)
6
17
5D
3Q
D(4)
FA(10)
7
16
6D
4Q
D(5)
FA(11)
8
15
7D
5Q
D(6)
FA(12)
9
14
8D
6Q
D(7)
FA(13)
13
7Q
FA(14)
12
8Q
FA(15)
1
OC
11
10
CLK
GND
VDD50V
C25
VDD50V
100nF
U4
2
20
1D
VCC
D(7)
3
2D
D(6)
4
19
3D
1Q
D(5)
FD(7)
5
18
4D
2Q
D(4)
FD(6)
6
17
5D
3Q
D(3)
FD(5)
7
16
6D
4Q
D(2)
FD(4)
8
15
7D
5Q
D(1)
FD(3)
9
14
8D
6Q
D(0)
FD(2)
13
7Q
FD(1)
12
8Q
FD(0)
1
OC
11
10
CLK
GND
VDD50V
C27
VDD50V
100nF
U7
18
20
Y0
VCC
D(0)
17
Y1
D(1)
16
2
Y2
A0
D(2)
FD(0)
15
3
Y3
A1
D(3)
FD(1)
14
4
Y4
A2
D(4)
FD(2)
13
5
Y5
A3
D(5)
FD(3)
12
6
Y6
A4
D(6)
FD(4)
11
7
Y7
A5
D(7)
FD(5)
8
A6
FD(6)
9
A7
FD(7)
1
OE1
19
10
OE2
GND
_RD
Size
A3
Date
File Name
C
SAM4S ER-280 SERIES
D D
1
FA(0:17)
2
FD(0:7)
VDD50V
3
4
Shin Heung Precision Co., Ltd.
TITLE :
ER-280
Rev
1.3
FISCAL LOGIC BLOCK
Drawn by
2007.02.28
K.Y CHOI
Sheet
of
ER280 MAIN.SCH
9
11
D D
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